72 K25 front driveshaft removal - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bern74 · 02-20-2012, 03:15 PM

Hi all
I have to rebuild the joints on the front driveshaft on the 72 but I am having no luck at finding any information on the removal process. I see 4 bolts that appear to be holding the shaft onto the transfer case but when I removed one oil started to run out.....do I need to drain the case for this job??

Any help would sure be appreciated.

Chevy1TonFun · 02-20-2012, 04:03 PM

It sounds like you removed the bolts from the seal retainer. Look for a metal strap or small u bolt holding the u joint to the yoke. Those are the nuts or bolts you need to remove to remove the driveline. I'll post a pic later if someone doesn't beat me to it.

Bern74 · 02-20-2012, 07:39 PM

Okay, thanks......I'll have a better look and see if I can find them.
Should I remove the cross member to get at them?

Chevy1TonFun · 02-20-2012, 07:58 PM

no you have to remove the crossmember. Its not that difficult. Here is a pic

OLDCHEV4X4 · 02-21-2012, 01:00 PM

No cross member removal needed. Get a box wrench. Rotate drive shaft so that you can get the wrench on it and work it too. Hold the driveshaft from turning with pry bar at the other end. Remove bolt. Your gonna have to feel you way around a little, but it will work. Its a PITA job and its hard to get a decent turn out of the wrench.
Watch out for dirt in the eyes.

67swb72klb · 02-21-2012, 01:09 PM

i will 2nd that on the PITA job

Bern74 · 02-21-2012, 01:43 PM

Wow, that is amazing.......a picture really is worth a thousand words!!

Thanks!!

I don't know what I would do without this place and all the help that comes from it.......

02-20-2012, 03:15 PM	#1
Bern74 Registered User Join Date: May 2011 Location: Whitehorse, Yukon Posts: 25	72 K25 front driveshaft removal Hi all I have to rebuild the joints on the front driveshaft on the 72 but I am having no luck at finding any information on the removal process. I see 4 bolts that appear to be holding the shaft onto the transfer case but when I removed one oil started to run out.....do I need to drain the case for this job?? Any help would sure be appreciated.

02-20-2012, 04:03 PM	#2
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: 72 K25 front driveshaft removal It sounds like you removed the bolts from the seal retainer. Look for a metal strap or small u bolt holding the u joint to the yoke. Those are the nuts or bolts you need to remove to remove the driveline. I'll post a pic later if someone doesn't beat me to it. __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12

02-20-2012, 07:39 PM	#3
Bern74 Registered User Join Date: May 2011 Location: Whitehorse, Yukon Posts: 25	Re: 72 K25 front driveshaft removal Okay, thanks......I'll have a better look and see if I can find them. Should I remove the cross member to get at them?

02-20-2012, 07:58 PM	#4
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: 72 K25 front driveshaft removal no you have to remove the crossmember. Its not that difficult. Here is a pic __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 Last edited by Chevy1TonFun; 02-20-2012 at 08:12 PM.

02-21-2012, 01:00 PM	#5
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: 72 K25 front driveshaft removal No cross member removal needed. Get a box wrench. Rotate drive shaft so that you can get the wrench on it and work it too. Hold the driveshaft from turning with pry bar at the other end. Remove bolt. Your gonna have to feel you way around a little, but it will work. Its a PITA job and its hard to get a decent turn out of the wrench. Watch out for dirt in the eyes. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

02-21-2012, 01:09 PM	#6
67swb72klb Registered User Join Date: Dec 2010 Location: livingston co.mi Posts: 2,452	Re: 72 K25 front driveshaft removal i will 2nd that on the PITA job __________________ California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project

02-21-2012, 01:43 PM	#7
Bern74 Registered User Join Date: May 2011 Location: Whitehorse, Yukon Posts: 25	Re: 72 K25 front driveshaft removal Wow, that is amazing.......a picture really is worth a thousand words!! Thanks!! I don't know what I would do without this place and all the help that comes from it.......



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